Autopsy: 'Sons of Anarchy' actor Johnny Lewis who killed landlady, fell to death not on drugs

Anthony McCartney/AP

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An autopsy report shows no drugs were detected in the body of former "Sons of Anarchy" actor Johnny Lewis, who police say killed his landlady, then fell to his death.

Toxicology results on Lewis found no traces of cocaine, alcohol, marijuana or any other types of drugs in the actor's system. Officials checked for anti-psychotic drugs as well as psychedelic drugs.

Lewis was found dead in September in the driveway of a Los Angeles residence, and police found his landlady and a cat dead inside the home. Officials believe Lewis fell while trying to flee the home after killing 81-year-old Catherine Davis.

The killing occurred just days after Lewis was released from jail. Records show he had pleaded no contest to assault with a deadly weapon and attempted burglary in separate cases.

Authorities expressed concern about his mental health in court hearings before his release.